With the more and more complicated structural modeling and function,the design of suspended dome under complex condition such as heteromorphic shell surface,elastic heterogeneous support,uneven load distribution and so on,is a problem that need to be further studied.Taken the heteromorphic shell surface roof of conference hall in Dashahe Stylistic Center with eight-point elastic heterogeneous support for example,ellipse-like suspended dome consist of ribbed-type single-layer latticed shell and Giger-type cable strut was applied.The structural design idea and characteristic were discussed,and the influence of elastic supporting condition was also compared and studied.Combining prestress optimization method based on rigid-cable method and improved PGSA method,the static and stable performance of suspended dome under various type of cable strut arrangement was analyzed.The results show that elastic heterogeneous supporting condition has a relatively great effect on deformation,cable force distribution and element stress of suspended dome,and is necessary to be taken into consideration during the structural calculation and analysis.The cable strut arrangement with the same bottom elevation of the same circle brace rod,which is finally applied,can lead to more average bearing and deformation distribution,and relatively satisfied static and stable performance,and can effectively avoid the adverse effect of bidirectional bending on ring loop cables.
关键词
空间结构/弦支穹顶/肋环型/弹性支承/布索形式
Key words
space structure/suspended dome/ribbed type/elastic support/cable strut arrangement
维普
万方数据